Holley Edelbrock CARBURETOR SPACER PHENOLIC 4 Bbl Carb Spacer 1" 1 Inch Aluminum

Airflow Research (AFR) 4460 AFR Phenolic Carburetor Spacers Summit Racing Performance: As a general rule, the open design interval increases plenum volume to improve high RPM power, while the 4‑hole design increasesmixture velocity for improved low‑speed and mid‑range . 1 Inch Carb Spacer Holley Edelbrock CARBURETOR SPACER PHENOLIC 4 Bbl Carb Spacer 1" 1 Inch Aluminum Holley 4150 Spacer Specification:Item Type: Carburetor SpacerMaterial: Phenolic PlasticSize: Approx., 1in/2., 5cmFitment:Carburetor Spacer can replaces 4 carbs with a square bore base like for Holley 4150/4160, for Barry Grant, for Carter and for EdelbrockCarburetor Spacer can replacement for Small/Big BlockCarburetor Spacer can replacement for enginePackage List:3 x Carburetor Spacer 4 x Bolt 4 x Nut 4 x Gasket This 1 inch tall phenolic thermoset plastic spacer insulates your carburetor against manifold heat keeping it cooler and helps prevent fuel percolation (also known as vapor lock) in hot weather. This can also allow for a denser fuel mixure to help increase performance in some applications, as well as provide additional plenum volume. Open center design fits 4150/4160 4-barrel carbs as... RPCR9139 PHENOLIC PLASTIC CARBURETOR SPACER, OPEN CENTER, 1/2 THICK, SUIT 4150/4160 SERIES... Function: The Carb spacers extend the length of the intake mixture column and improve the air/fuel distribution. Good Replacement: 1in open center style carb spacer, for Holley 4150 carburetor, a replacement for Small/Big Block, a replacement for car engines.